I played Ingress for a bit. Love the concept - seems to be the Pong of AR games (not a dig, just the first of its kind that I've played and the potential for future games in this genre is exciting). After a few days I quit playing because IMO it seems better suited for concentrated urban cities. My city is a sprawl and I don't have the time to drive all day looking for the different components/interactions of the game.
Just one guy's opinion.